Adding support for slants is something we have been looking into, our current rendering platform does not appear to support this, but potentially upgrading renderers down the road may make sense.
Also, for the config, restarting the sim is not required. The file is re-read every time you reopen the in-sim SR22 menu, so just close the menu, make config file edits, save, and then reopen the menu and it will grab the changes that you saved.